Mathjax in hexo

When $a \ne 0$, there are two solutions to $ax^2 + bx + c = 0$ and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

Simple inline $a = b + c$.
Block:

$\frac{\partial u}{\partial t} = h^2 \left( \frac{\partial^2 u}{\partial x^2} + \frac{\partial^2 u}{\partial y^2} + \frac{\partial^2 u}{\partial z^2}\right)$ $\frac{\partial f}{\partial x}= \lambda \frac{\partial g}{\partial x} \\\\ \frac{\partial f}{\partial y}=\lambda \frac{\partial g}{\partial y} \\\\ g(x,y)=0$

add ejs

themes/xxx/layout/_partial/mathjax.ejs

<!-- MathJax配置，可通过单美元符号书写行内公式等 -->
<script type="text/x-mathjax-config">
    MathJax.Hub.Config({
    "HTML-CSS": {
        preferredFont: "TeX",
        availableFonts: ["STIX","TeX"],
        linebreaks: { automatic:true },
        EqnChunk: (MathJax.Hub.Browser.isMobile ? 10 : 50)
    },
    tex2jax: {
        inlineMath: [ ["$", "$"], ["\\(","\\)"] ],
        processEscapes: true,
        ignoreClass: "tex2jax_ignore|dno",
        skipTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'code']
    },
    TeX: {  
        equationNumbers: { autoNumber: "AMS" },
        noUndefined: { attributes: { mathcolor: "red", mathbackground: "#FFEEEE", mathsize: "90%" } },
        Macros: { href: "{}" }
    },
    messageStyle: "none"
    });
</script>
<!-- 给MathJax元素添加has-jax class -->
<script type="text/x-mathjax-config">
    MathJax.Hub.Queue(function() {
        var all = MathJax.Hub.getAllJax(), i;
        for(i=0; i < all.length; i += 1) {
            all[i].SourceElement().parentNode.className += ' has-jax';
        }
    });
</script>
<!-- 通过连接CDN加载MathJax的js代码 -->
<script type="text/javascript" async
  src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_CHTML">
</script>

add judge

themes/free2mind/layout/_partial/footer.ejs

<!-- 根据页面mathjax变量决定是否加载MathJax数学公式js -->
<% if (page.mathjax){ %>
<%- partial('mathjax') %>
<% } %>

Use NexT

clone https://github.com/theme-next/hexo-theme-next

1 2	npm uninstall hexo-renderer-marked --save npm install hexo-renderer-kramed --save

modify node_modules\kramed\lib\rules\inline.js
line: 11

1 2	//escape: /^\\([\\`{}\[\]()#$+\-.!_>])/, escape: /^\\([`\[\]()#$+\-.!_>])/,

line: 20

1 2	//em: /^\b_((?:__\|[\s\S])+?)_\b\|^\((?:\\\|[\s\S])+?)\(?!\)/, em: /^\((?:\\\|[\s\S])+?)\(?!\)/,

open switch in theme config
switch theme in blog config

done

https://docs.mathjax.org/en/latest/start.html
http://www.mamicode.com/info-detail-2145077.html
Hexo 的 Next 主题中渲染 MathJax 数学公式
 Nunjucks Error expected variable end解决办法